In fanfiction, sometimes it's because of house rivalries. Slytherins, in particular, might bully Harry because he's a Gryffindor. They see Gryffindors as their rivals and Harry as an easy target to show their superiority.
One reason could be jealousy. Harry is famous in the wizarding world, and some students might be envious of that. So they bully him to make themselves feel better.
Another way Harry could deal with it is by getting the support of the Hogwarts faculty. He could gather evidence of the bullying, like spells cast at him without provocation or mean - spirited remarks. Then, he could present this evidence to a trusted teacher, such as Professor McGonagall. She would likely take action against the bullies, perhaps giving them detention or restricting their privileges. This would not only stop the bullying but also show that there are consequences for such actions at Hogwarts.
One reason could be to give him a stronger connection to Hogwarts. As the heir, he might have special privileges or knowledge about the school. Another reason is to add a new dimension to his character. It makes him more than just a student who defeated Voldemort.
In some fanfictions, Harry might be expelled for being wrongly accused of using dark magic. Maybe someone framed him by planting dark magic items in his dorm. Another reason could be that he continuously breaks school rules in a way that the school can't tolerate, like sneaking into the Forbidden Forest too many times without permission.
He could confide in his friends like Ron and Hermione. They would surely support him and come up with a plan to stop the bullying.
One possible reason could be that he was under the influence of a powerful dark magic or a curse that made him lose control. Another reason might be that he was tricked into believing Hogwarts was a threat to the wizarding world in some extreme way. Maybe a powerful enemy manipulated him to think that destroying Hogwarts was the only way to save everyone.
Yes, in some fanfictions Harry Potter is bullied at Hogwarts. In these stories, it might be by the Slytherins who are often portrayed as the antagonists. They could use magic in mean ways against him, like jinxing his books so they won't open during class or tripping him with magic in the hallways.
One reason could be that it doesn't stay true to the original lore. For example, if the fanfiction changes the fundamental rules of magic in Hogwarts that were established in the original series. Another reason might be that the characters' personalities are distorted. Harry Potter is known for his courage and self - sacrifice, and if the fanfiction turns him into a cowardly or self - centered character, it could be rejected.
It could be because Percy is different. If he comes from a different background or has a unique personality trait, the bullies might target him. In the fanfiction, if Percy is from a different race or has an unusual way of speaking, the bullies might pick on him for not being like them.
One implication is that it completely changes the power dynamics and history within the Hogwarts universe in that particular fanfiction. It could also lead to different relationships between the houses. For example, if Harry is a founder, his Gryffindor values might be more strongly imprinted on the school from the start.
In fanfiction, Harry Potter being the Hogwarts champion often allows for new and exciting adventures. It can explore different relationships, like with his friends and rivals. It might also show how he overcomes challenges that were not in the original books, adding more depth to his character.